#!/usr/bin/perl -w
+#
+# Unconditionally regenerate:
+#
+# pod/perlintern.pod
+# pod/perlapi.pod
+#
+# from information stored in
+#
+# embed.fnc
+# plus all the .c and .h files listed in MANIFEST
+#
+# Has an optional arg, which is the directory to chdir to before reading
+# MANIFEST and *.[ch].
+#
+# This script is normally invoked as part of 'make all', but is also
+# called from from regen.pl.
-require 5.003; # keep this compatible, an old perl is all we may have before
- # we build the new one
-
-BEGIN {
- push @INC, 'lib';
- require 'regen.pl';
-} # glob() below requires File::Glob
-
+use strict;
#
# See database of global and static function prototypes in embed.fnc
# implicit interpreter context argument.
#
-open IN, "embed.fnc" or die $!;
-
-# walk table providing an array of components in each line to
-# subroutine, printing the result
-sub walk_table (&@) {
- my $function = shift;
- my $filename = shift || '-';
- my $leader = shift;
- my $trailer = shift;
- my $F;
- local *F;
- if (ref $filename) { # filehandle
- $F = $filename;
- }
- else {
- safer_unlink $filename;
- open F, ">$filename" or die "Can't open $filename: $!";
- $F = \*F;
- }
- print $F $leader if $leader;
- seek IN, 0, 0; # so we may restart
- while (<IN>) {
- chomp;
- next if /^:/;
- while (s|\\\s*$||) {
- $_ .= <IN>;
- chomp;
- }
- my @args;
- if (/^\s*(#|$)/) {
- @args = $_;
- }
- else {
- @args = split /\s*\|\s*/, $_;
- }
- print $F $function->(@args);
- }
- print $F $trailer if $trailer;
- unless (ref $filename) {
- close $F or die "Error closing $filename: $!";
- }
-}
-
my %apidocs;
my %gutsdocs;
my %docfuncs;
+my %seenfuncs;
my $curheader = "Unknown section";
my $docs = "";
DOC:
while (defined($doc = <$fh>)) {
- if ($doc =~ /^=head1 (.*)/) {
- $curheader = $1;
- next DOC;
- }
$line++;
last DOC if $doc =~ /^=\w+/;
if ($doc =~ m:^\*/$:) {
$docfuncs{$name} = [$flags, $docs, $ret, $file, $curheader, @args];
}
if (defined $doc) {
- if ($doc =~ /^=for/) {
+ if ($doc =~ /^=(?:for|head)/) {
$in = $doc;
redo FUNC;
}
sub docout ($$$) { # output the docs for one function
my($fh, $name, $docref) = @_;
my($flags, $docs, $ret, $file, @args) = @$docref;
+ $name =~ s/\s*$//;
$docs .= "NOTE: this function is experimental and may change or be
removed without notice.\n\n" if $flags =~ /x/;
$docs .= "NOTE: the perl_ form of this function is deprecated.\n\n"
if $flags =~ /p/;
- print $fh "=item $name\n$docs";
+ print $fh "=item $name\nX<$name>\n$docs";
if ($flags =~ /U/) { # no usage
# nothing
print $fh "=for hackers\nFound in file $file\n\n";
}
+sub output {
+ my ($podname, $header, $dochash, $footer) = @_;
+ my $filename = "pod/$podname.pod";
+ open my $fh, '>', $filename or die "Can't open $filename: $!";
+
+ print $fh <<"_EOH_", $header;
+-*- buffer-read-only: t -*-
+
+!!!!!!! DO NOT EDIT THIS FILE !!!!!!!
+This file is built by $0 extracting documentation from the C source
+files.
+
+_EOH_
+
+ my $key;
+ # case insensitive sort, with fallback for determinacy
+ for $key (sort { uc($a) cmp uc($b) || $a cmp $b } keys %$dochash) {
+ my $section = $dochash->{$key};
+ print $fh "\n=head1 $key\n\n=over 8\n\n";
+ # Again, fallback for determinacy
+ for my $key (sort { uc($a) cmp uc($b) || $a cmp $b } keys %$section) {
+ docout($fh, $key, $section->{$key});
+ }
+ print $fh "\n=back\n";
+ }
+
+ print $fh $footer, <<'_EOF_';
+=cut
+
+ ex: set ro:
+_EOF_
+
+ close $fh or die "Can't close $filename: $!";
+}
+
+if (@ARGV) {
+ my $workdir = shift;
+ chdir $workdir
+ or die "Couldn't chdir to '$workdir': $!";
+}
+
my $file;
-for $file (glob('*.c'), glob('*.h')) {
+# glob() picks up docs from extra .c or .h files that may be in unclean
+# development trees.
+my $MANIFEST = do {
+ local ($/, *FH);
+ open FH, "MANIFEST" or die "Can't open MANIFEST: $!";
+ <FH>;
+};
+
+for $file (($MANIFEST =~ /^(\S+\.c)\t/gm), ($MANIFEST =~ /^(\S+\.h)\t/gm)) {
open F, "< $file" or die "Cannot open $file for docs: $!\n";
$curheader = "Functions in file $file\n";
autodoc(\*F,$file);
close F or die "Error closing $file: $!\n";
}
-safer_unlink "pod/perlapi.pod";
-open (DOC, ">pod/perlapi.pod") or
- die "Can't create pod/perlapi.pod: $!\n";
-
-walk_table { # load documented functions into approriate hash
- if (@_ > 1) {
- my($flags, $retval, $func, @args) = @_;
- return "" unless $flags =~ /d/;
- $func =~ s/\t//g; $flags =~ s/p//; # clean up fields from embed.pl
- $retval =~ s/\t//;
- my $docref = delete $docfuncs{$func};
- if ($docref and @$docref) {
- if ($flags =~ /A/) {
- $docref->[0].="x" if $flags =~ /M/;
- $apidocs{$docref->[4]}{$func} =
- [$docref->[0] . 'A', $docref->[1], $retval,
- $docref->[3], @args];
- } else {
- $gutsdocs{$docref->[4]}{$func} =
- [$docref->[0], $docref->[1], $retval, $docref->[3], @args];
- }
- }
- else {
- warn "no docs for $func\n" unless $docref and @$docref;
+open IN, "embed.fnc" or die $!;
+
+# walk table providing an array of components in each line to
+# subroutine, printing the result
+
+while (<IN>) {
+ chomp;
+ next if /^:/;
+ while (s|\\\s*$||) {
+ $_ .= <IN>;
+ chomp;
+ }
+ s/\s+$//;
+ next if /^\s*(#|$)/;
+
+ my ($flags, $retval, $func, @args) = split /\s*\|\s*/, $_;
+
+ next unless $flags =~ /d/;
+ next unless $func;
+
+ s/\b(NN|NULLOK)\b\s+//g for @args;
+ $func =~ s/\t//g; # clean up fields from embed.pl
+ $retval =~ s/\t//;
+
+ my $docref = delete $docfuncs{$func};
+ $seenfuncs{$func} = 1;
+ if ($docref and @$docref) {
+ if ($flags =~ /A/) {
+ $docref->[0].="x" if $flags =~ /M/;
+ $apidocs{$docref->[4]}{$func} =
+ [$docref->[0] . 'A', $docref->[1], $retval, $docref->[3],
+ @args];
+ } else {
+ $gutsdocs{$docref->[4]}{$func} =
+ [$docref->[0], $docref->[1], $retval, $docref->[3], @args];
}
}
- return "";
-} \*DOC;
+ else {
+ warn "no docs for $func\n" unless $seenfuncs{$func};
+ }
+}
for (sort keys %docfuncs) {
# Have you used a full for apidoc or just a func name?
warn "Unable to place $_!\n";
}
-print DOC <<'_EOB_';
+output('perlapi', <<'_EOB_', \%apidocs, <<'_EOE_');
=head1 NAME
perlapi - autogenerated documentation for the perl public API
=head1 DESCRIPTION
+X<Perl API> X<API> X<api>
This file contains the documentation of the perl public API generated by
embed.pl, specifically a listing of functions, macros, flags, and variables
prefix. Some macros are provided for compatibility with the older,
unadorned names, but this support may be disabled in a future release.
-The listing is alphabetical, case insensitive.
+Perl was originally written to handle US-ASCII only (that is characters
+whose ordinal numbers are in the range 0 - 127).
+And documentation and comments may still use the term ASCII, when
+sometimes in fact the entire range from 0 - 255 is meant.
+
+Note that Perl can be compiled and run under EBCDIC (See L<perlebcdic>)
+or ASCII. Most of the documentation (and even comments in the code)
+ignore the EBCDIC possibility.
+For almost all purposes the differences are transparent.
+As an example, under EBCDIC,
+instead of UTF-8, UTF-EBCDIC is used to encode Unicode strings, and so
+whenever this documentation refers to C<utf8>
+(and variants of that name, including in function names),
+it also (essentially transparently) means C<UTF-EBCDIC>.
+But the ordinals of characters differ between ASCII, EBCDIC, and
+the UTF- encodings, and a string encoded in UTF-EBCDIC may occupy more bytes
+than in UTF-8.
+
+Also, on some EBCDIC machines, functions that are documented as operating on
+US-ASCII (or Basic Latin in Unicode terminology) may in fact operate on all
+256 characters in the EBCDIC range, not just the subset corresponding to
+US-ASCII.
+
+The listing below is alphabetical, case insensitive.
_EOB_
-my $key;
-for $key (sort { uc($a) cmp uc($b); } keys %apidocs) { # case insensitive sort
- my $section = $apidocs{$key};
- print DOC "\n=head1 $key\n\n=over 8\n\n";
- for my $key (sort { uc($a) cmp uc($b); } keys %$section) {
- docout(\*DOC, $key, $section->{$key});
- }
- print DOC "\n=back\n";
-}
-
-print DOC <<'_EOE_';
-
=head1 AUTHORS
Until May 1997, this document was maintained by Jeff Okamoto
_EOE_
-
-close(DOC) or die "Error closing pod/perlapi.pod: $!";
-
-safer_unlink "pod/perlintern.pod";
-open(GUTS, ">pod/perlintern.pod") or
- die "Unable to create pod/perlintern.pod: $!\n";
-print GUTS <<'END';
+output('perlintern', <<'END', \%gutsdocs, <<'END');
=head1 NAME
perlintern - autogenerated documentation of purely B<internal>
Perl functions
=head1 DESCRIPTION
+X<internal Perl functions> X<interpreter functions>
This file is the autogenerated documentation of functions in the
Perl interpreter that are documented using Perl's internal documentation
END
-for $key (sort { uc($a) cmp uc($b); } keys %gutsdocs) {
- my $section = $gutsdocs{$key};
- print GUTS "\n=head1 $key\n\n=over 8\n\n";
- for my $key (sort { uc($a) cmp uc($b); } keys %$section) {
- docout(\*GUTS, $key, $section->{$key});
- }
- print GUTS "\n=back\n";
-}
-
-print GUTS <<'END';
-
=head1 AUTHORS
The autodocumentation system was originally added to the Perl core by
perlguts(1), perlapi(1)
END
-
-close GUTS or die "Error closing pod/perlintern.pod: $!";
https://perl5.git.perl.org / perl5.git / blobdiff